This is (will be soon 😎) a Plugin Extension for "IP Location Block" WordPress plugin, selective allowing administrators by dynamic/static DNS domain, country, intenet provider or IP
Code already exists for at least 5 years, but was never published on GitHub. Plugin was made to extend the abandoned IP Geo Block - WordPress plugin.
Now it has to be renewed/converted as extension for "IP Location Block" WordPress plugin and checked for compatibilities with most recent WordPress and PHP versions.
If you are interested to be notified when changes occur, please show your interest by giving a "star" or click "watch" for this repository (see at the top-right of this GitHub repository page).
In meantime, you may visit best image compression plugin for WordPress.
Thanks.